NAME
List::MapBruteBatch - Do a brute-force batched map() though a list with
a callback
SYNOPSIS
map_brute_batch($cb, \@list);
my @ret = map_brute_batch($cb, \@list, \$cb_success, \$cb_failure);
DESCRIPTION
Firstly. Why would you use this?
You have some N number of items you want to process. You have some
function that can take those N, and it's much cheaper to do them in one
big batch than one at a time.
However, any one of the N items can fail, causing the entire batch of N
to fail with it. When that happens you either don't know which one
failed the batch, or finding out would be tedious.
This module provides a map()-like function to solve that problem. It'll
attempt to process a \@list you provide with a $cb function that you
provide.
If your $cb doesn't return true we bisect the \@list and call your $cb
on each half of the bisected list, and if those fail we repeat this
process until we're processing one item, which may also fail.
You can optionally provide $cb_success or $cb_failure callbacks,
those'll be called in map()-like fashion on items that fail or succeed,
respectively. You can use this to make the function return a list of
items showing which items ended up failing or succeeding.
AUTHOR
Ævar Arnfjörð Bjarmason <
[email protected]>
COPYRIGHT AND LICENSE
This software is copyright (c) 2013-2016 by Ævar Arnfjörð Bjarmason
<
[email protected]>
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
